I have read that an overdetermined system is one with more rows (equations) that columns(unknowns).
I believe that an overdetermined system is typically one that is not solvable, unless one of the equations in the linear system is a linear combination of the other.
However, looking at the code below, it doesn't seem that any of the equations is a linear combination of the others. However, matlab still solves the system once
the script is executed. Any explanation is appreciated.
A=[ 2 2 -2; 6 4 4; 10 8 6; 11 15 9];
v=[10 2 8 20]';